The Guide to Cycling Ergonomics the Guidetocyclingergonomics Bicycle Steering Systems the Specialists in a Pain-Free Ride

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The Guide to Cycling Ergonomics the Guidetocyclingergonomics Bicycle Steering Systems the Specialists in a Pain-Free Ride The Guide to Cycling Ergonomics A pain-free ride. Your online guide to cycling ergonomics. CyclingRight.com D-5 The specialists in bicycle steering systems A pain-free ride. Your online guide to cycling ergonomics. CyclingRight.com Cycling right is all a matter of adjustment. Muscle work and load distribution: On a bicycle the whole body is in action – and not just when doing sport, but every time you ride. A great many muscles are involved, and each muscle has its counter- part. Because all of the forces need to be balanced out before you can begin to experience true „riding comfort“. The back muscles The shoulder muscles stabilize and straighten the play an important On the following pages you will spinal column and position supporting role. They fi nd information and useful tips the pelvis. They cushion reduce the load on the that will help you to adjust your impacts transmitted from back and the pressure bike correctly – the easiest way the ground and keep the on the hands, while to do this is of course together torso and head in the also cushioning terrain with your ergotec bicycle dealer. desired position. impacts. Taking the time to adjust your bike correctly is defi nitely worth- while. Sometimes it can take The hands are especially several steps to get it right. „load-sensitive“ and can Because many positive effects only bear about 20 per- will only become noticeable cent of the load acting during a longer ride or after you on the body. have become used to the new feel of the bike. With a little patience you‘ll get where you want to be: cycling easily and healthily on a bike that is a joy to ride! The buttocks bear up to 50 percent of the load. Dr. Achim Schmidt The feet typically carry Cycling sports expert at the German Sports University Cologne 100 percent of the body‘s weight and can The stomach muscles PS: Ergonomically shaped even withstand up to are the counterpart to handlebar grips and specially 1000 percent during the back muscles. They padded saddles provide added jumps. comfort. But this is only one stabilize the pelvis and side of the story – positioning the back: Back pains are and posture on the bicycle are often the result of weak just as important. stomach muscles! 2 Basic posture: dynamic! Seat of comfort: the pelvis. The golden rule: „Think dynamic“ when cycling! Make sure you The starting point for a consistently comfortable posture is actively use as many muscles as possible. And remember to the right „dynamic“ positioning of the pelvis. According to the alternately relieve the pressure on your hands, buttocks and experts, if the pelvis is wrongly angled, this can cause pain at a feet – your three contact points with the bike. completely different point in the body (e.g. shoulder, back, etc.) Right Wrong When the pelvis is correctly angled, the spine takes on When the pelvis is wrongly angled it tilts slightly back- an „S“ shape, thus producing a back with a slight natural ward into an „upright“ position. As a result, the back hollow. becomes rounded and the spine less „resilient“... Problem: hands Problem: buttocks Problem: knees and feet … hurt because: the arms are straigh- … hurt because: the saddle is posi- … hurt because: „the saddle is too tened, the torso and arms are at an tioned too high above the handlebar low“ the foot is wrongly positioned on unfavorable angle (excessive stress on level, the distance between the the pedal the shoes are unsuitable or the arms), the handlebar and grips are saddle and the crank is not right, too tightly laced the selected gears not optimally shaped. the saddle is at the wrong angle, are too „heavy“ for the terrain. the saddle is unsuitable, the pelvis Remedy: Change your posture by is „upright“ (see above). Remedy: Adjust the saddle height, choosing the right handlebar orientation, adjust the pedals and shoes, position handlebar shape and type of grip … Remedy: Change your posture by the feet correctly. adjusting the right saddle-to-handlebar positioning, fi nding an appropriate sad- dle and adjusting it correctly. All ergotec tips on line at: humpert.com 3 A pain-free ride. Your online guide to cycling ergonomics. CyclingRight.com Riding style? Getting your own style right. Classic (Dutch) bike position City bike position Very upright posture, almost vertical with back at Slightly inclined torso, approx. 60 to 70° angle to the 90° angle to the ground. The handlebar and grips ground. High handlebar. are very close to the torso. Advantages Advantages The upright posture gives the rider a good view of the Intuitively, the spine is held in its natural S-shape. traffi c. The stress on the arms and hands is very low. Power can be fi rmly applied to the pedal. Disadvantages Disadvantages The arms are often held straight to grip the high The power transfer to the pedals is relatively low. handlebars. – which leads to cramped shoulders and All the weight rests on the buttocks. pain in the hands. After a short while many people tend to take on a The high seat can easily tempt one to slump in the slumped posture. saddle. By the way: the frame height of a bicycle can often be misleading, as manufacturers have different methods of determining this. When buying a bike, the frame height should be considered as a rough guide as to whether the bike is more or less the right size for you. You will usually need an appropriate seatpost, handlebar and handlebar stem. 4 The fi rst thing to do is to decide which riding style you prefer. Do you usually ride short distances at a moderate speed? Or do you prefer to go out on longer runs and want to cover ground fast? In either case your riding style will differ – and so will the bike you need. We have picked out four bicycle categories and the matching riding styles to give you an idea of the range of possibilities. Trekking bike position Sporty position Distinctly inclined torso, approx. 30 to 60° angle to the Sporty, fast-paced cycling. Signifi cantly inclined ground. Large distance between the handlebar and the torso, approx. 15 to 30° angle to the ground. The saddle. saddle is higher than the handlebar. Advantages Advantages The shoulders, back of the neck and hands take a greater Optimal power transmission. share in supporting the load, resulting in a more versatile, Aerodynamic: low air resistance. active riding style. This relieves pressure on the back, spine and buttocks, Disadvantages which is especially important when riding long distances. Demands highly trained muscles in the back, legs, The whole body is involved in transmitting power to the shoulders and stomach! pedals. This position is not suitable for cycling in everyday Disadvantages traffi c - the body is continuously tensed to perfor- The hands, back of the neck and shoulders are more highly mance level. stressed. The muscles need training to withstand this load comfortably. By the way: in a representative study conducted by the German Sport University Cologne on behalf of Humpert/ergotec, 57% of the interviewed cyclists said that they had not previously done anything to reduce discomfort experienced when cycling. We say that nobody has to put up with discomfort – and if you continue reading, you’ll be on the right track to getting your bike properly equipped and adjusted. All ergotec tips on line at: humpert.com 5 A pain-free ride. Your online guide to cycling ergonomics. CyclingRight.com First things fi rst: getting the saddle right. It’s easier to get Preparation the adjustment right when you Align the saddle so that it is lean against a wall. horizontal! Push the saddle Or better still, ask a on the bracket so that it is helper to hold the bike positioned centrally above the steady as you sit on it. seatpost. To do this, you will usually need an Allen key (5 or 6 mm). A spirit level can be useful to get the alignment right. Horizontal Pedaling correctly 1 The right saddle height Climb onto your bike and stretch out one leg. Place your foot with the heel on the pedal at the lowest point of its arc. Your knee should now be straight. If you are sitting square on the saddle when in this position, the saddle is at the Right right height. When riding and pedaling, the ball of Of course, nobody rides with straight legs. When you place your foot on the pedal the foot should be on the pedal, to be precise: right over the pedal spindle. in the correct riding position (ball of the foot with base joints of the toes above the pedal spindle), if the saddle height is right, your knee should still be slightly bent when the pedal reaches its lowest point. A short test ride will soon show whether the saddle is too high. If your pelvis tilts to the right and left when pedaling, the saddle is too high. If it is too low, you will probably only notice this after many miles of riding when your knees start to hurt. By the way: saddle frames with a graduated scale are useful as they make it easy to adjust the saddle height quickly after transporting it in a car, for example. Wrong 6 No matter what riding style you prefer, the starting point for adjusting your bike for your own personal comfort is getting the saddle into the right position! This is not just a matter of the correct height.
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